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Finding the Fourth Proportional to 2,858.93, 4,281.04 and 1,980.18

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Solution

The fourth proportional to 2,858.93, 4,281.04 and 1,980.18 is: 2,965.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.93 : 4,281.04 = 1,980.18 : x
  2. Step 2: Convert to fraction form
    2,858.93/4,281.04 = 1,980.18/x
  3. Step 3: Cross multiply
    2,858.93x = 4,281.04 × 1,980.18
  4. Step 4: Simplify right side
    2,858.93x = 8,477,229.79
  5. Step 5: Solve for x
    x = 8,477,229.79/2,858.93
  6. Step 6: Final answer
    x = 2,965.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.